Adds support to read and extract a rar.
Usage:
final File rar = new File("foo.rar");
final File destinationFolder = new File("destinationFolder");
ExtractArchive extractArchive = new ExtractArchive();
extractArchive.extractArchive(rar, destinationFolder);
Dependency on maven:
<dependency>
<groupId>com.github.junrar</groupId>
<artifactId>junrar</artifactId>
<version>0.7</version>
</dependency>